just modify the coils on an old microwave transformer. cut odd all the coils on the input then wrap 10 in its place and use that as the input that will give you the voltage you need. be carefil though as it will spark when you put the electropdes in the water.

in the upcoming presidential election, there will be several candidates who will be running, one of whom is Hillary Clinton. Now WAIT A SECOND!!! I though there was some sort of rule that prevented someone from serving more than two terms in office. Vote Against Hillary: Presidential Elections 08

a lincoln ac 225 is a basic 240v arc welder, they retail for about $300, but they have been making them for like 40 years so it's easy to find a used one cheap.
there are also many very similar machines out there, some much cheaper than a lincoln.
myself, i think lincoln > all other welders

and the votage is anywhere from 3.3v to 12v (depending on which connect you use) i sugeest to use the pci-e connecter, cause normaly the vid card uses the most power. on my power supply i have dual 20a 12v rails but its a $120 sli power supply so....